Grevillea dimorpha, commonly known as flame grevillea or olive grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the Grampians National Park in Victoria, Australia. It is an erect to spreading shrub with elliptic to linear or egg-shaped leaves with the narrower end towards the base, and groups of bright red flowers. Description Grevillea dimorpha is an erect to spreading shrub that typically grows to a height of . Its leaves are elliptic to linear or egg-shaped with the narrower end towards the base, long and wide, the edges turned down or rolled under and the lower surface silky-hairy. The flowers are usually arranged in leaf axils, in down-turned groups of two to sixteen flowers and are bright red, the pistil long. Flowering mainly occurs from August to December and the fruit is an elliptic follicle long, with a bumpy surface. Taxonomy Grevillea dimorpha was first formally described in 1855 by Ferdinand von Mueller in Transactions of the Philosophical Society of Victoria from specimens collected in the Grampians. The specific epithet (dimorpha) means "having two forms". Distribution and habitat Flame grevillea grows in heathy woodland and forest on sandy soil in the Grampians National Park in Victoria. Conservation status This grevillea is listed as "rare" in Victoria, on the Department of Sustainability and Environment's Advisory list of rare or threatened plants in Victoria. References dimorpha Flora of Victoria (Australia) Proteales of Australia Taxa named by Ferdinand von Mueller Plants described in 1855